a
Department of Applied Chemistry, Faculty of Chemistry, University of the Basque Country (UPV-EHU), San Sebastián, Spain
E-mail:Zoraida_freixa@ehu.es

b
Surfaces Division, IK4-CIDETEC, San Sebastián, Spain

c
Department of Organic Chemistry II, Faculty of Chemistry, University of the Basque Country (UPV-EHU), San Sebastián, Spain

d
IKERBASQUE, Basque Foundation for Science, Bilbao, Spain

Abstract

Twelve Ir(III) triscyclometalated compounds containing up to three azobenzene fragments on their structure have been synthesized based on photochromic 2-phenylpyridyl type ligands 1–4. These complexes are intended to study the possibility of transferring the photochromicity of the azobenzene fragment to the organometallic compound, and the effect of the substitution pattern, relative distance of the azobenzene to the metal centre, and number of azobenzenes on their properties.

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